Switch with timing device



July 21, 1925. 1,546,605 c. F. NORDEN SWITCH WITH TIMING DEVICE FiledJuly 19, 1920 [VI TIE I I r I N VEN TOR.

Patented July 21, 1925.

UNITED STATES PATENT OFFICE.

CHARLES F. NORDEN, OF NEW YORK, N. Y., ASSIGNOR TO HENRY HYMAN 8a 00.,INQ,

OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

SWITCH WITH TIMING DEVICE. 1

Application filed July 19, 1926. Serial'No. 397,328.

T5 all whom it may concern:

Be it known that I, CHARrlEs F. NoRDnN, a subject of the Republic ofGermany, residing at New York city, in the county of New York and Stateof New York, have invented a new and useful Improvement in Switches withTiming Devices, of which the tollow-' ing is a full, clear, and exactdescription.\

My invention relates to time switches, the object of the invention beingto maintain the current to apparatus controlled by snap switches, pushbutton switches, knife switches, sockets and flash light switches for anadjusted time interval after the switch is turned ofi.

I attain these objects by the mechanism illustrated in the accompanyingdrawing, in which are 'shown the arrangements of the wiring andmechanism of the switch.

Fig. 1 is a diagrammatic illustration of the invention with the circuitopen and the switch off Fig. 2 is a diagrammatic illustration showingthe circuit closed; Fig. 3 is a diagrammatic illustration showing themain circuit device turned 01f but with the shuntcircuit through thetiming mechanism closed; and F 1g. dis a diagrammatic illustration ofthe apparatus at the moment that the timing mechanism is releasing thetime circuit device.

Similar numerals refer'to similar parts throughout the several views.

The-circuit closing device 01 main switch for the main circuit has acarrier or pin 2 arranged to contact with a second circuit closingdevice or supplemental element 3 and move it against the pressure ofspring 4 intoclosed position as the main switch is closed,-a catch orlink 5 on the end of a thermostatic spring 6 engaging the end of thesupplemental element 3 to hold it in closed'positiony A screw 7 isprovided to bend the thermostatic member 6 to adjustthe extent ofengagement between thecontacting' faces of member 3 and the hook 5.

A resistance wire 8, preferably of German silver and of a resistancesuitable for the cur- 6 and the other connects to the main circuitbetween the contact 9 and the lamp 10.

.A contact 11 arranged to be engaged by the member 3 when in closedposition is connected to the thermostatic member 6.

. and therefore the time the lam When the main switch is closed, theparts are moved from the position of Fig. 1 to that of Fig. 2, the pin 2moving member 3 into closed position with the hook 5 engag: ing its end.The lighting current now passes through member 1 and contact 9 to thelamp, substantially no current passing through the shunt circuit formedby memher 3, contact 11, spring 6 and resistance wire 8. When the mainswitchmember is opened, the hook 5 retains the member 3 in its closedposition, but now the lighting cur rent may pass through the formershunt circuit to the lamp. This heavier current heats the resistance 8and the thermostatic spring 6 to cause it to bend to withdraw the hook 5and release member 3, whereupon spring 4 moves member 3 to open thecircuit and extinguish the lamp 10. The spring 6 now cools and returnsto its normal position, ready to engage member 3 when the main switch isnext closed.

By adjusting the screw 7 the end of the sprin 6 may be shifted to varythe extent to which the hook 5 overlaps the end of the member 8. Thisserves to vary the time between the opening of the main switch and therelease of the supplemental member 3 10 will continue to burn after themam switch is opened.

I claim:

1. In a thermostatically-controlled time switch, a main circuit, apivoted main switch for opening and closing a break in said maincircuit, a supplemental pivoted switch having its plane of motionparallel to said main 'switch and having a bias to open position, meansto move said supplemental switch to closed jposition when the mainswitch is closed, a thermostatic latch member comprising a curved sheetnetal spring fastened at one end and havlng 'a. hook at the opposite endadapted to engage and hold the supplemental switch 1n closed position,said sprlng extending in the plane of motion of-said supplementalswltch, and a shunt circuit having a part arranged to heat-said latchmember to cause it to bend to release its hook from on agement wlth saidsupplemental switch w en said mam switch is open.

2. In a thermostatically-controlled time switch, a main circuit, apivoted main switch for opening and closing a. break nsaaeoe said latchmember to cause it to bend to release its hook from engagement with said15 supplemental switch when said main switch I is open, and means toadjust the position of said hook 'in relation to said supplementalswitch to regulate the time of operation of the shunt circuit before thesupplemental '20 switch is released.

Signed at New York city, N. Y., this 15th day of July, 1920.

CHARLES F. NORDEN. Witness:

ANTEONY L MANTIA.

